1 files changed, 146 insertions, 0 deletions
diff --git a/sys/contrib/octeon-sdk/cvmx-helper-loop.c b/sys/contrib/octeon-sdk/cvmx-helper-loop.c
new file mode 100644
index 0000000..18b0d51
--- /dev/null
+++ b/sys/contrib/octeon-sdk/cvmx-helper-loop.c
@@ -0,0 +1,146 @@
+/***********************license start***************
+ * Copyright (c) 2003-2010  Cavium Inc. (support@cavium.com). All rights
+ * reserved.
+ *
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *
+ *   * Redistributions in binary form must reproduce the above
+ *     copyright notice, this list of conditions and the following
+ *     disclaimer in the documentation and/or other materials provided
+ *     with the distribution.
+
+ *   * Neither the name of Cavium Inc. nor the names of
+ *     its contributors may be used to endorse or promote products
+ *     derived from this software without specific prior written
+ *     permission.
+
+ * This Software, including technical data, may be subject to U.S. export  control
+ * laws, including the U.S. Export Administration Act and its  associated
+ * regulations, and may be subject to export or import  regulations in other
+ * countries.
+
+ * TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
+ * AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR
+ * WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO
+ * THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR
+ * DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM
+ * SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE,
+ * MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF
+ * VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR
+ * CORRESPONDENCE TO DESCRIPTION. THE ENTIRE  RISK ARISING OUT OF USE OR
+ * PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
+ ***********************license end**************************************/
+
+
+
+
+
+
+
+/**
+ * @file
+ *
+ * Functions for LOOP initialization, configuration,
+ * and monitoring.
+ *
+ * <hr>$Revision: 70030 $<hr>
+ */
+#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
+#include <asm/octeon/cvmx.h>
+#include <asm/octeon/cvmx-config.h>
+#ifdef CVMX_ENABLE_PKO_FUNCTIONS
+#include <asm/octeon/cvmx-helper.h>
+#endif
+#include <asm/octeon/cvmx-pip-defs.h>
+#else
+#if !defined(__FreeBSD__) || !defined(_KERNEL)
+#include "executive-config.h"
+#include "cvmx-config.h"
+#ifdef CVMX_ENABLE_PKO_FUNCTIONS
+
+#include "cvmx.h"
+#include "cvmx-helper.h"
+#endif
+#else
+#include "cvmx.h"
+#include "cvmx-helper.h"
+#endif
+#endif
+#ifdef CVMX_ENABLE_PKO_FUNCTIONS
+
+
+int __cvmx_helper_loop_enumerate(int interface)
+{
+	return (OCTEON_IS_MODEL(OCTEON_CN68XX) ? 8 : 4);
+}
+
+/**
+ * @INTERNAL
+ * Probe a LOOP interface and determine the number of ports
+ * connected to it. The LOOP interface should still be down
+ * after this call.
+ *
+ * @param interface Interface to probe
+ *
+ * @return Number of ports on the interface. Zero to disable.
+ */
+int __cvmx_helper_loop_probe(int interface)
+{
+	return __cvmx_helper_loop_enumerate(interface);
+}
+
+
+/**
+ * @INTERNAL
+ * Bringup and enable a LOOP interface. After this call packet
+ * I/O should be fully functional. This is called with IPD
+ * enabled but PKO disabled.
+ *
+ * @param interface Interface to bring up
+ *
+ * @return Zero on success, negative on failure
+ */
+int __cvmx_helper_loop_enable(int interface)
+{
+    cvmx_pip_prt_cfgx_t port_cfg;
+    int num_ports, index;
+    unsigned long offset;
+
+    num_ports = __cvmx_helper_get_num_ipd_ports(interface);
+
+    /* 
+     * We need to disable length checking so packet < 64 bytes and jumbo
+     * frames don't get errors
+     */
+    for (index = 0; index < num_ports; index++) {
+        offset = ((octeon_has_feature(OCTEON_FEATURE_PKND)) ?
+	    cvmx_helper_get_pknd(interface, index) :
+            cvmx_helper_get_ipd_port(interface, index));
+
+        port_cfg.u64 = cvmx_read_csr(CVMX_PIP_PRT_CFGX(offset));
+        port_cfg.s.maxerr_en = 0;
+        port_cfg.s.minerr_en = 0;
+        cvmx_write_csr(CVMX_PIP_PRT_CFGX(offset), port_cfg.u64);
+    }
+
+    /*
+     * Disable FCS stripping for loopback ports
+     */
+    if (!octeon_has_feature(OCTEON_FEATURE_PKND)) {
+        cvmx_ipd_sub_port_fcs_t ipd_sub_port_fcs;
+        ipd_sub_port_fcs.u64 = cvmx_read_csr(CVMX_IPD_SUB_PORT_FCS);
+        ipd_sub_port_fcs.s.port_bit2 = 0;
+        cvmx_write_csr(CVMX_IPD_SUB_PORT_FCS, ipd_sub_port_fcs.u64);
+    }
+
+    return 0;
+}
+
+#endif /* CVMX_ENABLE_PKO_FUNCTIONS */
+